Fix Job arrays exceeding queueSize (#5920)#6345
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pditommaso merged 1 commit intomasterfrom Aug 14, 2025
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## Problem Job arrays bypassed executor.queueSize limits, causing resource overallocation. When `process.array = 30` and `executor.queueSize = 40`, up to 70 concurrent tasks could run (40 regular + 30 array tasks) instead of the intended 40. ## Solution - Modified TaskPollingMonitor.canSubmit() to account for array size in capacity calculations - Job arrays now consume slots equal to their array size (not just 1) - Added validation that throws IllegalArgumentException if array size exceeds queue capacity - Extracted complex logic into checkQueueCapacity() helper method to maintain clean ternary structure ## Changes - **TaskPollingMonitor.groovy**: Added getTaskSlots() and checkQueueCapacity() helper methods - **TaskPollingMonitorTest.groovy**: Added comprehensive parameterized tests using Spock @unroll - **ParallelPollingMonitorTest.groovy**: Added inheritance test to verify validation works in subclass ## Test Coverage - Exception validation for oversized arrays (3 test cases) - Queue capacity accounting with various scenarios (9 test cases) - Edge cases: unlimited capacity, process constraints, task readiness - Inheritance verification for ParallelPollingMonitor 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
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Summary
Fixes issue where job arrays bypassed
executor.queueSizelimits, causing resource overallocation. Previously, a job array would count as only 1 task against the queue limit regardless of its actual array size.Before:
process.array = 30+executor.queueSize = 40→ up to 70 concurrent tasksAfter:
process.array = 30+executor.queueSize = 40→ max 40 concurrent tasks (respects queue limit)Root Cause
The original
canSubmit()method only checkedrunningQueue.size() < capacity, treating job arrays as single tasks. This allowed arrays to exceed intended resource limits.Solution
Core Changes
IllegalArgumentExceptionif array size exceeds total queue capacitycheckQueueCapacity()helper while preserving original ternary structureImplementation Details
The
checkQueueCapacity()method:Test Coverage
Added comprehensive tests using Spock's parameterized testing with 12 new test cases covering:
Backward Compatibility
✅ Fully backward compatible - no breaking changes:
executor.queueSize = 0) works as beforeRelated